Hydromechanical drawing-press.



W.'KLO6KE & F. O RTON. HYDROMBOHANIGAL DRAWING PRESS.

APPLICATION FILED AUG. 17, 1910.

Patented July 25, 1911.

3 SHEETS-SHEET 1-.

xfmvg'moRs 5 WITNESSES:

W. KLOGKE & F. ORTON. HYDROMEGHANIGAL DRAWING PRESS.

APPLICATION FILED .AUG.17. 1910.

Patented July 25, 1911.

3 SHEETS-SHEET 2.

INVENTORS 5' WITNESSES:

W. KLOGKE & F. OETON. HYDROMBGHANICAL DRAWING PRESS.

APPLICATION FILED AUG. 17' 1910.

Patented July 25 1911.

3 SHEETS-5B 5T 3.

INVENTQRS JNMW 97%;

Wzmassas: 21% Q7,

refiner orricn EOCKE AND FREDERICK SRTON,

OF NEW YORK, NJY ASSIGNORS TO E. W.

BLISS COMPANY, 03: BEQGKLYN, NEW YQRK, A CUBPQRATIO N OF WES'E VIRGINIA.

HYDEOMEGEAIHCAL DEtEflVING-PRESS.

scenes.

Specification of lettersratent. Patented July 25, 1915i.

Application filed August 1.7, 1918. Serial No. 577,667.

To all "Vo 10m it may concern:

Be it known that we, WILLIAM KLocKE, residing in the borough of Brooklyn, county of Kings, city and State of New York, and FREDERICK Onion, residing at Glendale, in the borough and county of Queens, city and State of New York, both citizens of the United States, haveijointly invented certain new and useful improvements in Hydrornechenical Drawing-Presses, of which the following is a specification.

Our invention relates to drawing presses, particularly of that type adapted to perform very heavy work-although it may be found useful in connection with other types of machine, employing a movable table. The advantage in a press of this character wherein the punch is operated by hydraulic means, i of table also moved by hydraulic men" s, has long been recognized. "We have devi ii an improvedconstruction of such machine employing power increasing conneotion of novel and advantageous type be tween the table and its hydraulic operating means, wherein also we have provided novel and useiul means for adjusting the bl nkholder and its support, and wherein we have also presented numerous other novel and ad- "antagec is structural features which will, appear 2 the description proceeds. In the drawing is illustrated on organized machine containing our invention. This is a desir able form, but does not necessarily represent the limi of our invention, as changes may be made therein within the limits of the ap' pended claims. v

in the said drawings,l "igure l is a plan view of our machine, in part broken away; Fig 2- a. sectional elevation on the line 2-2 of 1, looking to the right; 3 i is a rear new of the right hand end. of the machine of'Fig. 1; Fig. i is a side elevationthereof; and 5 is a central sectional elevation on the line in Fig. l.

r-ls illustrated in the accompanying drawings, our machine mounted upon a base or standard A having uprights a a (s and connecting cross pieces or bridges an a, and these are held together against the lon ftudinal strain of the operating; members by side stay rods a a which are held in place by passing through the bridges o and a,

and by nuts a a and; Lit-their rear ends these stay pieces are reoelved within channels 1n the upper part of the uprights a uprights.

and there held by nut-s a which are accessible through openings o in the side of said Upper and lower stay bolts a" pass longitudinally through the uprights a on each side of the machine, and serve to stifien and strengthen the same and to tie in place the rear part thereof which is made removable to receive the shaft 03, the purpose of which is-hereafter explained. Adjustable side su ports a a are connected to each stay r0 and to the base of themachine, and provide means whereby the stay rod may have its vertical position ruljiisted as de sired. Bridge a is n ount-ed'to slide on its support as shown in Fig. 2 so that the aimsment of the parts will be preserved when the similarly mounted.

Gui machine as illustrated employs a stationary adjustable blank holder B, a moving punch D, and a movable .work table C. As illustrated, the blank holder is in the form of a hollow annular shell, upon the periphery of which the blank 3) 'is placed. This blank holder may be made removable for the purpose of substituting one size for another, and to this end it is illustrated as being seated in a heed to which it is removably attached. as by'bolts. It may be found desirable to permitthis head to have a'slightmoveme'nt, and it is shown as being connected toits support 6 by a swivel joint, as. at b and may be there held by screw bolts F)" which permit a slight movement. The support 5 for the blank holder is in the form of a sleeve or collar which is made hollow for a purpose presently to be described, and is mounted within the hollow bore of the bridge a. This support is threaded externally for the purpose of adjusting it to' and fro, and may be adjusted'as desired by v a rotatable internally threaded collar 6 which is fixed in an annular groove in the bridge a and is geared externally and turnedby pinion b operated through miter gears b 6 end through shaft 6 which may be turned by any suitable means, as for in stance a wrench. It will be perceived that the turning of the shaft 6 will adjust the blank holder B to-and fro as described.

stay rods stretchinf use, and: bridge a is I sion of such water is controlled through hyi draulic valve mechanism 1. A guide (Z l mounted upon the shaft (Z, and slides withintlto hollow sleeve 7 and serves to guide the said shaft in its to and fro movcnients.

The work table may be of any desired form or ctuistruction. As illustrated, it is mounted upon a tramc c which extends substantiall the width of the machine and pcrloratcd to receive the stay rods (4" upon which the said 'l irainc'is supported, and slides to and fro, and which direct and guide its movements. Substantially mid.- way between the two stay rods and in line i with the blank holder, is mounted the l e nialc die which may have a rupl'iorting backing ring c". The said die Pttfitfttbl) niadc removable for the purpose. of: chain? ing; fixes, and -to this end is reinovably :l= lilt'llttl to the table C. as lor instance by clips w bolted to the table and engaging a shoulder on the die. '0 have illustrated the said work table. as movable to and fro, and the means: tor causing" such movcmtait we have illustrated as being a hydraulic piston.

A connection between th piston and the table whereby the table may be moved by the hydraulic piston without causing: undue pressure. between the table and the blank held upon the blank holder thin to an c:\' (cs8 or deficiency ol? nim'cuicut of o any exce s of pressure applied to the 'iistou, we rtg'ard 21 o! extreme importance, and as coimtitutiug a very ii'nporlant feature of our i rontion. Such connection as illustrated includes a toggle joint which is arranged pcrpci'idicula to the line of motion ot' the lrvdraulic piston. and also pt h entlicular to the plain: at" movement of the table, and which we hav illustrated as connected to a st-cond iUSlf-llt. joint directly connected to the table. The particular arrangement ol' such toggle joint illustrated we regard as-dcs-sirahle, but we do not wish to be. limited to such arrangement. as other forms could easily be. devi ed. I

The 1110511 for operating the table include a li .lrauln. :ylirulcr E im'loeiu a piston 1' ctmnccted to a piston rod (1' which is guided in a wgrlorattid block 0 attached to the base ot thc machine. Water is admitted to the cylinder at the. opposite tacos of the piston through pipes c at coi'itrollcd by a hydraulic valve mechanism a. The piston rod 0 is connected to a cross head 0" (Fig. 1) to which are attached the means tor operating the toggle joints which as shown comprise pivoted links e a disposed upon each side o't 'thc said cross head. 'tTltl at their rear ends connected to rocking arms a 0' which are pivoted to the base of the machine, and at their upper ends are pivoted to short l nks o c. The table C as illustrated includes t transversely arranged posts 0 upon each .sidc upon which are pivotally mounted the forward arms 0 c of a toggle joint, the roar arms of which 0 c are illustrated as bifurcated, and are connected to the said forward arms through a shaft 0 upon which both of said arms are mounted to swing. The rearknuclcles of thetoggle joint arc pivoted upon a fixed shaft 0" which is mounted. in the upright (F and effcctually supports the said shaft. It is important that this shaft should receive ample support, as it bears the working strain on thetahle. The upper joints 0 e of the lower toggle member are connected to the shatt thereby furnishing the connection between the two toggle members. By means of the said toggle joints'the table may be forced forward for the performance of its function of holding the blank upon the blank holder while the punch performs its work, by means of a hydraulic piston of much less power than isrequired for, the punch. owing to the fact that; the power is magnified through the toggle joints. The adjustability of the blank holder permits it to be brought to any desired posit-ion, and the toggle joints permit the table to be brought forward to the blank holder and to it H'O a. perfect dwell thereon with uniform pr .ui'c. 'It as is frequently the case the hydraulic piSton has a slight excess movement. the eame will be taken up through the two tco'e'lc joints and will not. vary to any appreciablcextent the pressure of the table upon the blink. This is extren'iely important, as if the hydraulic piston were directly connected to the table. the table would freiqucntly be forced upon the blank holder l with such pressure that the punch would be unableto operate satisfactorily, and simply tear the blank rather than drawing it.

The operation of our device is as follower-A. blank holder B of the proper shape to perform the work in hand, is at.- tached to the frame I), and a blank I) is placed thereon. The table, to which a suitahle. female die 0 has been applied, is then in the rearward position indicated at dotted lines in Fig. 5', with its directly connected toggle similarly in dotted line position. The hydraulic valve mechanisu'i e is then operated by hand if desired, and water is caused to pass through the pipe e to'rciI'ig the hydraulic piston 0 forwardly and cansing a similar ii novement to the'piston rod 6 and bringing thetoggles t0 the upright position shown in full lines in Fi 5, in Which position the blank is firmly grasped between the die c cand the blank holder B, and the punch 1") is permitted to draw the Work from the blank holder to the recess in the table provided for that purpose. It will be perceived that any slight excess movement of the hydraulic piston which may move the arm a one way or the other, will have ofnitnyimunepistonto table, enablesns to employ hydraulically operated means to move the table. The :ldjustment of the blank holder permits us to obtain anydesired intensity of pressure upon the blank, and practically in operation the hydrauli cally operated table litted with our novel means for operaiively connecting it to the hydraulic piston. is as certain and eliicient in operation as is the usual mechanical drawing pre The prov' between the hydraulic table operating means and the tablo'. and ot. the directconnection of the punch with its hydraulic piston, permits the entire drawing press to be operated by hydraulic means. This is accomplished by the. construction which permits the table to dwell upon the blank while the punchis fed and withdrawn and to be then withdrawn. Ive thereby provide a machine wherein the hydraulic valves are adapted to automatic control, as the dwell. of the table is uniform and sufficient. to enable the punch to perform its function.

Ive have illustrated what we regard as a practical and efiicient organized machine for embodying our invention as described. Many of the parts of the machine may be changed, and the same may be modified according to' the character of the work in hand, and within the skill ofthe mechanic, without departing from our invention.

\Ve claim as our invention 1. In a drawing press, a stationary, adjustable blank holder, a movable table, a hydraulic piston for moving said table, and a connection between said table and piston including a toggle joint.

2. In a drawing pre 5, a movable punch, a stationary blank hold 5. and ninans for ad- .justing said blank holder comprising a threadedsupporting member for said blank holder, a. rotatable worm for engaging same held against axial movement, and mea'ns for rotatingsat 3. In a drawing press, a punch, a stationary hollow'blank holder, means for adjusting same comprising a hollow supporting member and means for adjusting said. sup-g porting member to position said supporting member servin as a guide for the punch.

,4. In a drawing press, a movable table, a hydraulic piston for moving same, a toggle joint normally perpendicularto the plane of movement of said table and having a fixed pivotal point, and a connection to said piston. a second toggle joint directly connected to said table and having a fixed pivotal point, and a connection betweensaid 5 6 toggles.

lt fll of the indirect connectiona drawing press, a movable table and means for moving same comprising a hydraulic piston, a piston rod, a cross head carried thereby, a plurality of toggle joints having fixed pivotal points and normally perpendicular to the plane of movement of said table, links connecting said cross head and toggles, a pluralityot' toggle joints directly connected to said table and having fixed pivotal points, and connections between said two sets of toggles.

6. In a horizontal drawing press, a horizontally moving table, moving means there for including a toggle joint having a fixed rear pivotal point in line with said table and at'its forward point directly connected to said table, and when straightened establishing a direct connection between said table and said fixed pivotal point, whereby said fixed pivotal point receives a direct thrust without torsion, and hydraulic means for operating said toggle joint.

7. In a drawing press, a hollow blank holder, a hollow adjustable support therefor, a punch moving through said blank holder and support and guided by the latter, directly connected hydraulic means for moving said punch and a movable table, hydraulic means for operating same, and an in-- direct connection between said operating means and said table comprising a plurality of perpendicularly arranged toggle joints each having a fixed pivotal point, one of which is connected to said hydraulic operat-- ing means'at a point intermediate its ends and one of which is connected to said table, and a connection from said toggle which is connected to the hydraulic operating means and the toggle connected to the table at a point intermediate the ends of the latter.

8. In a horizontal drawing press, a hollow blank holder, a hollow adjustable support therefor, a punch inoving through said blank holder and support and guided by the latter, directly connected hydraulic means for moving said punch, a movable table and hydraulic means for operating the same of less power than the hydraulic punch operat ing means, and an indirect connection between said operating means and said table comprising a toggle joint connected to said table and having a fixed pivotal point at the rear of and in a direct line with the path of movement of said table and a second toggle joint disposed perpendicularly with relation to said first-mentioned toggle and connected. thereto, the said hydraulic table operating means underlying said table and connected to said last-mentioned toggle.

9. In a drawing press, a movable tool, hydraulic means for operating same and a; power 'inarcasing connection between said 'sing a toggle joint directly connected t said movable tool and having a pivotal thrust bearing at its opposite end and extending in a. direct line between said table and said bearin 10. lo a drawing press, a movable tool, hydraulic means for operating same, and a power increasing connec ion between said parts comprising a toggle joint directly connected to said movable tool and having a pivotal thrust bearing at its opposite end and extruding in a direct line between said table and said bearing, and a second'toggle joint disposed perpendicularly with relation to the first and connected thereto between the point oi attachment to the table and the said thrust bearing.

11. in a horizontal drawing press, a movable tool, hydraulic means for operating same comprising a lnn'izontal hydraulic pis- "ion disposed beneath said tool, and a power increasing connection between said parts cmnprising a toggle joint directly connected to said movable tool and having a pivotal thrust hearing at its opposite end and eX- tending in a direct line between said table and said bearing.

12. In a horizontal drawing press, a movable tool, hydraulic means for operating same comprising a horizontal hydraulic piston disposed beneath said tool, a power increasing connection between said parts comprising a toggle joint directly connected to said movable tool and having a pivotal thrust hearing at its opposite end and extending in a direct line oetween said table and said bearing, and a second toggle joint disposed perpendicularly with relation to the first and connected thereto between the point of attachment to the table and the said thrust bearing.

13. In a drawing press, a longitudinally reciprocating tool-carrying cross head, longitudinal stay rods, adapted to receive the thrust of said press and. passing through and guiding said cross head, uprights to which said stayrods are secured at\ their rear ends, and separable blocks secured to said uprights, providing a thrust bearing for said cross head, a shaft mounted in said bearing, and a toggle joint connection between said shaft and said cross head. 1

let. In a drawing press, longitudinal stay rods adapted to receive the thrust of the press, fixed supports for said stay rods at one end, a blank-holder support attached to said stay rods, and a cylinder likewise at tached thereto and adapted to receive a punch operating piston, said blank-holder support and cylinder movable in their respective bascs to preserve the alinement of the parts upon the stretching of the stay rods in use.

15. In a horizontal drawing press, a 1novable punch, a movable table and operating means therefor and a stationary blankholder, means for maintaining said parts in position in operation, comprising a pair of longitudinal stay rods located one at each side of said punch and permitting easy in sertion and removal of dies and blanks, said stay rods passing through and guiding said table, and adjustable supports for said stay rods located between their ends.

In witness whereof, we have hereunto signed our names in the presence of two subscribing witnesses.

WILLIAM KLOCKE. FREDERICK ORTON.

Witnesses:

GUSTAV L. JOHNSON, LARS J. Lonwonnn. 

